Just ordered a 'jack of all chassis' for the F4 I'm building with diyaudio boards.

I'm happy to support diyaudio and hope this works out for you folks. As you've already said the chassis is one of the most troublesome parts of a build for some of us and I'm glad to have someone do most of the dirty work for me. I have only tried drilling/tapping heatsinks once and ended up breaking the tap. Fortunately the heatsinks I had offered a clamp type mount and I switched to that but the F4 board is too wide for the clamp so I was faced with drilling/tapping again...until now.

Thanks again and now I can concentrate on the part of the hobby I like the best....electronics, and listening to music.

West side hit it yesterday afternoon and we sold a few more! All survey respondents have now been emailed as well. We've sold 6 of the 4U and 5 of the 5U. We actually started with 20 of the 4U and 25 of the 5U, so there's 14 and 20 remaining respectively. No problems there at all. I've raised the limit from 1 to 2 per order, so those who want dual monoblocks can secure a pair, and in another 24 hours I'll remove the limit entirely.

I assume there is space for dual-torroidal transformers, two PS boards, soft switch PCB in there (as well as the amp boards).

Hi,

You will run out of space pretty quickly with that setup but with a bit of planning I think you can squeeze them in a 4U. The PSU boards will have to be mounted vertically so you will have to device a way to do so, this is done to make room for the two toroidal transformers and soft start pcb.

But ultimately, if it's going to be a power plant amp build then I would strongly suggest to get the bigger, deeper chassis.